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Old 02-03-2011, 11:59 PM   #1
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tiptronic transmission shift normal when car is cold,when warmed up 3rd gear slipps

HI all,

i have a problem with my 99 boxster,it shifts normal when the car sits for a while and when i drive for about 5 kms and up the 3rd gear wont engage,it slipps
and again when it sits for a half hour it shifts normal

please advise if you have any suggestions

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Old 02-04-2011, 04:42 AM   #2
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Sounds like

heat related and since the trans is cooled by the fluid inside and by a center radiator, I'd look at the fluid level.
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Old 02-04-2011, 10:25 AM   #3
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When did you last change the fluid and filter? Lifetime really isn't. Also if you have a Durametric you could check for fault codes in the trans. ED
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Old 02-04-2011, 03:16 PM   #4
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I just did a TIP service on my 2000 S. Fluid was very dirty and I believe it was a good liter low, maybe more. Shifts a lot better now. The TIP electronic plug coming out of the trans has a connector to the harness...someone else had a problem and found dirt and grime had made a connection weak...cleaning solved his problem.

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